X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-z8k.c;h=265adc6ac24f8304b74c4ca296c518d91641425d;hb=945e0f82dad31db89a107b496532886fe215c011;hp=13370ddcc70e3cbe3d76dec1f2b531467c1a672e;hpb=587c4264e020987b332577135abfefdbb3dee699;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-z8k.c b/gas/config/tc-z8k.c index 13370ddcc7..265adc6ac2 100644 --- a/gas/config/tc-z8k.c +++ b/gas/config/tc-z8k.c @@ -1,1164 +1,1565 @@ -/* tc-z8k.c -- Assemble code for the Zilog Z800N - Copyright (C) 1992 Free Software Foundation. - +/* tc-z8k.c -- Assemble code for the Zilog Z800n + Copyright (C) 1992-2016 Free Software Foundation, Inc. + This file is part of GAS, the GNU Assembler. - + GAS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) + the Free Software Foundation; either version 3, or (at your option) any later version. - + GAS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with GAS; see the file COPYING. If not, write to the Free + Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ -/* - Written By Steve Chamberlain - sac@cygnus.com - */ - -#include -#define DEFINE_TABLE -#include "../opcodes/z8k-opc.h" +/* Written By Steve Chamberlain . */ #include "as.h" -#include "read.h" -#include "bfd.h" -#include -#include "listing.h" +#include "safe-ctype.h" +#define DEFINE_TABLE +#include "opcodes/z8k-opc.h" -const char comment_chars[] = { '!',0 }; -const char line_separator_chars[] = { ';' ,0}; -const char line_comment_chars[] = ""; +const char comment_chars[] = "!"; +const char line_comment_chars[] = "#"; +const char line_separator_chars[] = ";"; extern int machine; extern int coff_flags; int segmented_mode; -int md_reloc_size ; -/* This table describes all the machine specific pseudo-ops the assembler - has to support. The fields are: - pseudo-op name without dot - function to call to execute this pseudo-op - Integer arg to pass to the function - */ - -void cons(); +/* This is non-zero if target was set from the command line. + If non-zero, 1 means Z8002 (non-segmented), 2 means Z8001 (segmented). */ +static int z8k_target_from_cmdline; +static void +s_segm (int segm) +{ + if (segm) + { + segmented_mode = 1; + bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001); + } + else + { + segmented_mode = 0; + bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002); + } +} -void s_segm() +static void +even (int ignore ATTRIBUTE_UNUSED) { - segmented_mode = 1; - machine = bfd_mach_z8001; - coff_flags = F_Z8001; + frag_align (1, 0, 0); + record_alignment (now_seg, 1); } -void s_unseg() +static int +tohex (int c) { - segmented_mode = 0; - machine = bfd_mach_z8002; - coff_flags = F_Z8002; + if (ISDIGIT (c)) + return c - '0'; + if (ISLOWER (c)) + return c - 'a' + 10; + return c - 'A' + 10; } -const pseudo_typeS md_pseudo_table[] = + +static void +sval (int ignore ATTRIBUTE_UNUSED) { -{ "int", cons, 2 }, -{ "data.b", cons, 1 }, -{ "data.w", cons, 2 }, -{ "data.l", cons, 4 }, -{ "form", listing_psize, 0 }, -{ "heading", listing_title, 0}, -{ "import", s_ignore, 0}, -{ "page", listing_eject, 0}, -{ "program", s_ignore, 0}, -{ "z8001", s_segm, 0}, -{ "z8002", s_unseg, 0}, -{ 0,0,0 } -}; + SKIP_WHITESPACE (); + if (*input_line_pointer == '\'') + { + int c; + input_line_pointer++; + c = *input_line_pointer++; + while (c != '\'') + { + if (c == '%') + { + c = (tohex (input_line_pointer[0]) << 4) + | tohex (input_line_pointer[1]); + input_line_pointer += 2; + } + FRAG_APPEND_1_CHAR (c); + c = *input_line_pointer++; + } + demand_empty_rest_of_line (); + } +} +/* This table describes all the machine specific pseudo-ops the assembler + has to support. The fields are: + pseudo-op name without dot + function to call to execute this pseudo-op + Integer arg to pass to the function + */ + +const pseudo_typeS md_pseudo_table[] = { + {"int" , cons , 2}, + {"data.b" , cons , 1}, + {"data.w" , cons , 2}, + {"data.l" , cons , 4}, + {"form" , listing_psize , 0}, + {"heading", listing_title , 0}, + {"import" , s_ignore , 0}, + {"page" , listing_eject , 0}, + {"program", s_ignore , 0}, + {"z8001" , s_segm , 1}, + {"z8002" , s_segm , 0}, + + {"segm" , s_segm , 1}, + {"unsegm" , s_segm , 0}, + {"unseg" , s_segm , 0}, + {"name" , s_app_file , 0}, + {"global" , s_globl , 0}, + {"wval" , cons , 2}, + {"lval" , cons , 4}, + {"bval" , cons , 1}, + {"sval" , sval , 0}, + {"rsect" , obj_coff_section, 0}, + {"sect" , obj_coff_section, 0}, + {"block" , s_space , 0}, + {"even" , even , 0}, + {0 , 0 , 0} +}; const char EXP_CHARS[] = "eE"; -/* Chars that mean this number is a floating point constant */ -/* As in 0f12.456 */ -/* or 0d1.2345e12 */ +/* Chars that mean this number is a floating point constant. + As in 0f12.456 + or 0d1.2345e12 */ const char FLT_CHARS[] = "rRsSfFdDxXpP"; +/* Opcode mnemonics. */ +static struct hash_control *opcode_hash_control; -const relax_typeS md_relax_table[1]; - - -static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ - +void +md_begin (void) +{ + const opcode_entry_type *opcode; + int idx = -1; + opcode_hash_control = hash_new (); -void md_begin () -{ - opcode_entry_type *opcode; - char *prev_name= ""; - int idx = 0; - - opcode_hash_control = hash_new(); + for (opcode = z8k_table; opcode->name; opcode++) + { + /* Only enter unique codes into the table. */ + if (idx != opcode->idx) + hash_insert (opcode_hash_control, opcode->name, (char *) opcode); + idx = opcode->idx; + } - - for (opcode = z8k_table; opcode->name; opcode++) - { - /* Only enter unique codes into the table */ - char *src= opcode->name; + /* Default to z8002. */ + s_segm (z8k_target_from_cmdline ? z8k_target_from_cmdline - 1 : 0); - if (strcmp(opcode->name, prev_name)) + /* Insert the pseudo ops, too. */ + for (idx = 0; md_pseudo_table[idx].poc_name; idx++) { - hash_insert(opcode_hash_control, opcode->name, (char *)opcode); - idx++; + opcode_entry_type *fake_opcode; + fake_opcode = XNEW (opcode_entry_type); + fake_opcode->name = md_pseudo_table[idx].poc_name; + fake_opcode->func = (void *) (md_pseudo_table + idx); + fake_opcode->opcode = 250; + hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); } - opcode->idx = idx; - prev_name = opcode->name; - } - } +typedef struct z8k_op { + /* CLASS_REG_xxx. */ + int regsize; -struct z8k_exp { - char *e_beg; - char *e_end; - expressionS e_exp; -}; -typedef struct z8k_op -{ - char regsize; /* 'b','w','r','q' */ - unsigned int reg; /* 0..15 */ + /* 0 .. 15. */ + unsigned int reg; int mode; - unsigned int x_reg;/* any other register associated with the mode */ - expressionS exp; /* any expression */ -} op_type; - + /* Any other register associated with the mode. */ + unsigned int x_reg; + /* Any expression. */ + expressionS exp; +} op_type; static expressionS *da_operand; static expressionS *imm_operand; +static int reg[16]; +static int the_cc; +static int the_ctrl; +static int the_flags; +static int the_interrupt; -int reg[16]; -int the_cc; +/* Determine register number. src points to the ascii number + (after "rl", "rh", "r", "rr", or "rq"). If a character + outside the set of {0,',',')','('} follows the number, + return NULL to indicate that it's not a valid register + number. */ -char * -DEFUN(whatreg,(reg, src), - int *reg AND - char *src) +static char * +whatreg (unsigned int *preg, char *src) { - if (isdigit(src[1])) - { - *reg = (src[0] - '0') * 10 +src[1] - '0'; - return src+2; - } - else - { - *reg = (src[0] - '0'); - return src+1; - } -return 0; -} + unsigned int new_reg; -/* - parse operands - - rh0-rh7, rl0-rl7 - r0-r15 - rr0-rr14 - rq0--rq12 - WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp - r0l,r0h,..r7l,r7h - @WREG - @WREG+ - @-WREG - #const - - */ - - -/* try and parse a reg name, returns number of chars consumed */ -char* -DEFUN(parse_reg,(src, mode, reg), - char *src AND - int * mode AND - unsigned int *reg) -{ - char *res = 0; - if (src[0] == 'r') - { - if (src[1] == 'r') - { - *mode = CLASS_REG_LONG; - res = whatreg(reg, src+2); - } - else if (src[1] == 'h') + /* src[0] is already known to be a digit. */ + if (ISDIGIT (src[1])) { - *mode = CLASS_REG_BYTE; - res = whatreg(reg, src+2); + new_reg = (src[0] - '0') * 10 + src[1] - '0'; + src += 2; } - else if (src[1] == 'l') + else { - *mode = CLASS_REG_BYTE; - res = whatreg(reg, src+2); + new_reg = (src[0] - '0'); + src += 1; } - else if (src[1] == 'q') + + if (src[0] != 0 && src[0] != ',' && src[0] != '(' && src[0] != ')') + return NULL; + + *preg = new_reg; + return src; +} + +/* Parse operands + + rh0-rh7, rl0-rl7 + r0-r15 + rr0-rr14 + rq0--rq12 + WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp + r0l,r0h,..r7l,r7h + @WREG + @WREG+ + @-WREG + #const +*/ + +/* Try to parse a reg name. Return a pointer to the first character + in SRC after the reg name. */ + +static char * +parse_reg (char *src, int *mode, unsigned int *preg) +{ + char *res = NULL; + char regno; + + /* Check for stack pointer "sp" alias. */ + if ((src[0] == 's' || src[0] == 'S') + && (src[1] == 'p' || src[1] == 'P') + && (src[2] == 0 || src[2] == ',')) { - * mode = CLASS_REG_QUAD; - res = whatreg(reg, src+2); + if (segmented_mode) + { + *mode = CLASS_REG_LONG; + *preg = 14; + } + else + { + *mode = CLASS_REG_WORD; + *preg = 15; + } + return src + 2; } - else + + if (src[0] == 'r' || src[0] == 'R') { - *mode = CLASS_REG_WORD; - res = whatreg(reg, src+1); + if (src[1] == 'r' || src[1] == 'R') + { + if (src[2] < '0' || src[2] > '9') + return NULL; /* Assume no register name but a label starting with 'rr'. */ + *mode = CLASS_REG_LONG; + res = whatreg (preg, src + 2); + if (res == NULL) + return NULL; /* Not a valid register name. */ + regno = *preg; + if (regno > 14) + as_bad (_("register rr%d out of range"), regno); + if (regno & 1) + as_bad (_("register rr%d does not exist"), regno); + } + else if (src[1] == 'h' || src[1] == 'H') + { + if (src[2] < '0' || src[2] > '9') + return NULL; /* Assume no register name but a label starting with 'rh'. */ + *mode = CLASS_REG_BYTE; + res = whatreg (preg, src + 2); + if (res == NULL) + return NULL; /* Not a valid register name. */ + regno = *preg; + if (regno > 7) + as_bad (_("register rh%d out of range"), regno); + } + else if (src[1] == 'l' || src[1] == 'L') + { + if (src[2] < '0' || src[2] > '9') + return NULL; /* Assume no register name but a label starting with 'rl'. */ + *mode = CLASS_REG_BYTE; + res = whatreg (preg, src + 2); + if (res == NULL) + return NULL; /* Not a valid register name. */ + regno = *preg; + if (regno > 7) + as_bad (_("register rl%d out of range"), regno); + *preg += 8; + } + else if (src[1] == 'q' || src[1] == 'Q') + { + if (src[2] < '0' || src[2] > '9') + return NULL; /* Assume no register name but a label starting with 'rq'. */ + *mode = CLASS_REG_QUAD; + res = whatreg (preg, src + 2); + if (res == NULL) + return NULL; /* Not a valid register name. */ + regno = *preg; + if (regno > 12) + as_bad (_("register rq%d out of range"), regno); + if (regno & 3) + as_bad (_("register rq%d does not exist"), regno); + } + else + { + if (src[1] < '0' || src[1] > '9') + return NULL; /* Assume no register name but a label starting with 'r'. */ + *mode = CLASS_REG_WORD; + res = whatreg (preg, src + 1); + if (res == NULL) + return NULL; /* Not a valid register name. */ + regno = *preg; + if (regno > 15) + as_bad (_("register r%d out of range"), regno); + } } - } return res; - - } -char * -DEFUN(parse_exp,(s, op), - char *s AND - expressionS *op) +static char * +parse_exp (char *s, expressionS *op) { - char *save = input_line_pointer; - char *new; - segT seg; - input_line_pointer = s; - seg = expr(0,op); - new = input_line_pointer; - input_line_pointer = save; - if (SEG_NORMAL(seg)) - return new; - switch (seg) { - case SEG_ABSOLUTE: - case SEG_UNKNOWN: - case SEG_DIFFERENCE: - case SEG_BIG: - case SEG_REGISTER: - return new; - case SEG_ABSENT: - as_bad("Missing operand"); - return new; - default: - as_bad("Don't understand operand of type %s", segment_name (seg)); - return new; - } + char *save = input_line_pointer; + char *new_pointer; + + input_line_pointer = s; + expression (op); + if (op->X_op == O_absent) + as_bad (_("missing operand")); + new_pointer = input_line_pointer; + input_line_pointer = save; + return new_pointer; } - /* The many forms of operand: - + @r - #exp + #exp exp exp(r) r(#exp) r(r) - - - */ -static -char * -DEFUN(checkfor,(ptr, what), - char *ptr AND - char what) +static char * +checkfor (char *ptr, char what) { -if (*ptr == what) ptr++; -else { -as_bad("expected %c", what); -} -return ptr; + if (*ptr == what) + ptr++; + else + as_bad (_("expected %c"), what); + + return ptr; } -/* Make sure the mode supplied is the size of a word */ -static void -DEFUN(regword,(mode, string), - int mode AND - char *string) +/* Make sure the mode supplied is the size of a word. */ + +static void +regword (int mode, const char *string) { int ok; + ok = CLASS_REG_WORD; - if (ok != mode) - { - as_bad("register is wrong size for a word %s", string); - } + if (ok != mode) + { + as_bad (_("register is wrong size for a word %s"), string); + } } -/* Make sure the mode supplied is the size of an address */ -static void -DEFUN(regaddr,(mode, string), - int mode AND - char *string) +/* Make sure the mode supplied is the size of an address. */ + +static void +regaddr (int mode, const char *string) { int ok; + ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD; - if (ok != mode) - { - as_bad("register is wrong size for address %s", string); - } + if (ok != mode) + { + as_bad (_("register is wrong size for address %s"), string); + } } -struct cc_names { -int value; -char *name; - +struct ctrl_names { + int value; + const char *name; +}; +static struct ctrl_names ctrl_table[] = { + { 0x1, "flags" }, /* ldctlb only. */ + { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */ + { 0x3, "refresh" }, + { 0x4, "psapseg" }, + { 0x5, "psapoff" }, + { 0x5, "psap" }, + { 0x6, "nspseg" }, + { 0x7, "nspoff" }, + { 0x7, "nsp" }, + { 0 , 0 } }; -struct cc_names table[] = +static void +get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) { - 0x0,"f", - 0x1,"lt", - 0x2,"le", - 0x3,"ule", - 0x4,"ov", - 0x4,"pe", - 0x5,"mi", - 0x6,"eq", - 0x6,"z", - 0x7,"c", - 0x7,"ult", - 0x8,"t", - 0x9,"ge", - 0xa,"gt", - 0xb,"ugt", - 0xc,"nov", - 0xc,"po", - 0xd,"pl", - 0xe,"ne", - 0xe,"nz", - 0xf,"nc", - 0xf,"uge", - 0,0 - }; + char *src = *ptr; + int i, l; + + while (*src == ' ') + src++; + + mode->mode = CLASS_CTRL; + for (i = 0; ctrl_table[i].name; i++) + { + l = strlen (ctrl_table[i].name); + if (! strncasecmp (ctrl_table[i].name, src, l)) + { + the_ctrl = ctrl_table[i].value; + if (*(src + l) && *(src + l) != ',') + break; + *ptr = src + l; /* Valid control name found: "consume" it. */ + return; + } + } + the_ctrl = 0; +} + +struct flag_names { + int value; + const char *name; +}; + +static struct flag_names flag_table[] = { + { 0x1, "P" }, + { 0x1, "V" }, + { 0x2, "S" }, + { 0x4, "Z" }, + { 0x8, "C" }, + { 0x0, "+" }, + { 0x0, "," }, + { 0, 0 } +}; static void -DEFUN(get_cc_operand,(ptr, mode, dst), - char **ptr AND - struct z8k_op *mode AND - unsigned int dst) +get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) { char *src = *ptr; - int r; + char c; int i; - while (*src== ' ') - src++; + int j; - mode->mode = CLASS_CC; - for (i = 0; table[i].name; i++) - { - int j; - for (j = 0; table[i].name[j]; j++) + while (*src == ' ') + src++; + + mode->mode = CLASS_FLAGS; + the_flags = 0; + for (j = 0; j <= 9; j++) { - if (table[i].name[j] != src[j]) - goto fail; + if (!src[j]) + goto done; + c = TOUPPER(src[j]); + for (i = 0; flag_table[i].name; i++) + { + if (flag_table[i].name[0] == c) + { + the_flags = the_flags | flag_table[i].value; + goto match; + } + } + goto done; + match: + ; } - the_cc = table[i].value; - *ptr = src + j; - return; - fail:; - } - the_cc = 0x8; - return ; + done: + *ptr = src + j; } -static void -DEFUN(get_operand,(ptr, mode, dst), - char **ptr AND - struct z8k_op *mode AND - unsigned int dst) +struct interrupt_names { + int value; + const char *name; +}; + +static struct interrupt_names intr_table[] = { + { 0x1, "nvi" }, + { 0x2, "vi" }, + { 0x3, "both" }, + { 0x3, "all" }, + { 0, 0 } +}; + +static void +get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) { char *src = *ptr; - char *end; - unsigned int num; - unsigned int len; - unsigned int size; - mode->mode = 0; - + int i, l; while (*src == ' ') - src++; - if (*src == '#') - { - mode->mode = CLASS_IMM; - imm_operand = &(mode->exp); - src = parse_exp(src+1, &(mode->exp)); - } - else if (*src == '@') { - int d; - mode->mode = CLASS_IR; - src= parse_reg(src+1, &d, &mode->reg); - } - else - { - int regn; - end = parse_reg(src, &mode->mode, ®n); + src++; - if (end) + mode->mode = CLASS_IMM; + the_interrupt = 0; + + while (*src) { - int nw, nr; - src = end; - if (*src == '(') - { - src++; - end = parse_reg(src, &nw, &nr); - if (end) + for (i = 0; intr_table[i].name; i++) { - /* Got Ra(Rb) */ - src = end; - - if (*src != ')') - { - as_bad("Missing ) in ra(rb)"); - } - else - { - src++; - } - - regaddr(mode->mode,"ra(rb) ra"); - regword(mode->mode,"ra(rb) rb"); - mode->mode = CLASS_BX; - mode->reg = regn; - mode->x_reg = nr; - reg[ARG_RX] = nr; + l = strlen (intr_table[i].name); + if (! strncasecmp (intr_table[i].name, src, l)) + { + the_interrupt |= intr_table[i].value; + if (*(src + l) && *(src + l) != ',') + { + *ptr = src + l; + invalid: + as_bad (_("unknown interrupt %s"), src); + while (**ptr && ! is_end_of_line[(unsigned char) **ptr]) + (*ptr)++; /* Consume rest of line. */ + return; + } + src += l; + if (! *src) + { + *ptr = src; + return; + } + } } - else + if (*src == ',') + src++; + else { - /* Got Ra(disp) */ - if (*src == '#') - src++; - src = parse_exp(src, &(mode->exp)); - src = checkfor(src, ')'); - mode->mode = CLASS_BA; - mode->reg = regn; - mode->x_reg = 0; - da_operand = &(mode->exp); + *ptr = src; + goto invalid; } - } - else - { - mode->reg = regn; - mode->x_reg = 0; - } } - else + + /* No interrupt type specified, opcode won't do anything. */ + as_warn (_("opcode has no effect")); + the_interrupt = 0x0; +} + +struct cc_names { + int value; + const char *name; +}; + +static struct cc_names table[] = { + { 0x0, "f" }, + { 0x1, "lt" }, + { 0x2, "le" }, + { 0x3, "ule" }, + { 0x4, "ov/pe" }, + { 0x4, "ov" }, + { 0x4, "pe/ov" }, + { 0x4, "pe" }, + { 0x5, "mi" }, + { 0x6, "eq" }, + { 0x6, "z" }, + { 0x7, "c/ult" }, + { 0x7, "c" }, + { 0x7, "ult/c" }, + { 0x7, "ult" }, + { 0x8, "t" }, + { 0x9, "ge" }, + { 0xa, "gt" }, + { 0xb, "ugt" }, + { 0xc, "nov/po" }, + { 0xc, "nov" }, + { 0xc, "po/nov" }, + { 0xc, "po" }, + { 0xd, "pl" }, + { 0xe, "ne" }, + { 0xe, "nz" }, + { 0xf, "nc/uge" }, + { 0xf, "nc" }, + { 0xf, "uge/nc" }, + { 0xf, "uge" }, + { 0 , 0 } +}; + +static void +get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) +{ + char *src = *ptr; + int i, l; + + while (*src == ' ') + src++; + + mode->mode = CLASS_CC; + for (i = 0; table[i].name; i++) { - /* No initial reg */ - src = parse_exp(src, &(mode->exp)); - if (*src == '(') - { - src++; - end = parse_reg(src, &(mode->mode), ®n); - regword(mode->mode,"addr(Ra) ra"); - mode->mode = CLASS_X; - mode->reg = regn; - mode->x_reg =0; - da_operand = &(mode->exp); - src = checkfor(end, ')'); - } - else - { - /* Just an address */ - mode->mode = CLASS_DA; - mode->reg = 0; - mode->x_reg = 0; - da_operand = &(mode->exp); - } + l = strlen (table[i].name); + if (! strncasecmp (table[i].name, src, l)) + { + the_cc = table[i].value; + if (*(src + l) && *(src + l) != ',') + break; + *ptr = src + l; /* Valid cc found: "consume" it. */ + return; + } } - } - *ptr = src; + the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */ } -static -char * -DEFUN(get_operands,(opcode, op_end, operand), - opcode_entry_type *opcode AND - char *op_end AND - op_type *operand) +static void +get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) { - char *ptr = op_end; - switch (opcode->noperands) - { - case 0: - operand[0].mode = 0; - operand[1].mode = 0; - break; - - case 1: - ptr++; - if (opcode->arg_info[0] == CLASS_CC) + char *src = *ptr; + char *end; + + mode->mode = 0; + + while (*src == ' ') + src++; + if (*src == '#') { - get_cc_operand(&ptr, operand+0,0); + mode->mode = CLASS_IMM; + imm_operand = &(mode->exp); + src = parse_exp (src + 1, &(mode->exp)); } - else + else if (*src == '@') { - - get_operand(& ptr, operand +0,0); + mode->mode = CLASS_IR; + src = parse_reg (src + 1, &mode->regsize, &mode->reg); } - operand[1].mode =0; - break; - - case 2: - ptr++; - if (opcode->arg_info[0] == CLASS_CC) + else { - get_cc_operand(&ptr, operand+0,0); + unsigned int regn; + + end = parse_reg (src, &mode->mode, ®n); + + if (end) + { + int nw; + unsigned int nr; + + src = end; + if (*src == '(') + { + src++; + end = parse_reg (src, &nw, &nr); + if (end) + { + /* Got Ra(Rb). */ + src = end; + + if (*src != ')') + as_bad (_("Missing ) in ra(rb)")); + else + src++; + + regaddr (mode->mode, "ra(rb) ra"); + mode->mode = CLASS_BX; + mode->reg = regn; + mode->x_reg = nr; + reg[ARG_RX] = nr; + } + else + { + /* Got Ra(disp). */ + if (*src == '#') + src++; + src = parse_exp (src, &(mode->exp)); + src = checkfor (src, ')'); + mode->mode = CLASS_BA; + mode->reg = regn; + mode->x_reg = 0; + imm_operand = &(mode->exp); + } + } + else + { + mode->reg = regn; + mode->x_reg = 0; + } + } + else + { + /* No initial reg. */ + src = parse_exp (src, &(mode->exp)); + if (*src == '(') + { + src++; + end = parse_reg (src, &(mode->mode), ®n); + regword (mode->mode, "addr(Ra) ra"); + mode->mode = CLASS_X; + mode->reg = regn; + mode->x_reg = 0; + da_operand = &(mode->exp); + src = checkfor (end, ')'); + } + else + { + /* Just an address. */ + mode->mode = CLASS_DA; + mode->reg = 0; + mode->x_reg = 0; + da_operand = &(mode->exp); + } + } } - else + *ptr = src; +} + +static char * +get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand) +{ + char *ptr = op_end; + char *savptr; + + switch (opcode->noperands) { + case 0: + operand[0].mode = 0; + operand[1].mode = 0; + while (*ptr == ' ') + ptr++; + break; - get_operand(& ptr, operand +0,0); - } - if (*ptr == ',') ptr++; - get_operand(& ptr, operand +1, 1); - break; + case 1: + if (opcode->arg_info[0] == CLASS_CC) + { + get_cc_operand (&ptr, operand + 0, 0); + while (*ptr == ' ') + ptr++; + if (*ptr && ! is_end_of_line[(unsigned char) *ptr]) + { + as_bad (_("invalid condition code '%s'"), ptr); + while (*ptr && ! is_end_of_line[(unsigned char) *ptr]) + ptr++; /* Consume rest of line. */ + } + } + else if (opcode->arg_info[0] == CLASS_FLAGS) + { + get_flags_operand (&ptr, operand + 0, 0); + while (*ptr == ' ') + ptr++; + if (*ptr && ! is_end_of_line[(unsigned char) *ptr]) + { + as_bad (_("invalid flag '%s'"), ptr); + while (*ptr && ! is_end_of_line[(unsigned char) *ptr]) + ptr++; /* Consume rest of line. */ + } + } + else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2))) + get_interrupt_operand (&ptr, operand + 0, 0); + else + get_operand (&ptr, operand + 0, 0); - case 3: - ptr++; - get_operand(& ptr, operand +0,0); - if (*ptr == ',') ptr++; - get_operand(& ptr, operand +1, 1); - if (*ptr == ',') ptr++; - get_operand(& ptr, operand +2, 2); - break; - - default: - abort(); - } - - - return ptr; -} + operand[1].mode = 0; + break; -/* Passed a pointer to a list of opcodes which use different - addressing modes, return the opcode which matches the opcodes - provided - */ + case 2: + savptr = ptr; + if (opcode->arg_info[0] == CLASS_CC) + { + get_cc_operand (&ptr, operand + 0, 0); + while (*ptr == ' ') + ptr++; + if (*ptr != ',' && strchr (ptr + 1, ',')) + { + savptr = ptr; + while (*ptr != ',') + ptr++; + *ptr = 0; + ptr++; + as_bad (_("invalid condition code '%s'"), savptr); + } + } + else if (opcode->arg_info[0] == CLASS_CTRL) + { + get_ctrl_operand (&ptr, operand + 0, 0); + + if (the_ctrl == 0) + { + ptr = savptr; + get_operand (&ptr, operand + 0, 0); + + if (ptr == 0) + return NULL; + if (*ptr == ',') + ptr++; + get_ctrl_operand (&ptr, operand + 1, 1); + if (the_ctrl == 0) + return NULL; + return ptr; + } + } + else + get_operand (&ptr, operand + 0, 0); + if (ptr == 0) + return NULL; + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 1, 1); + break; + case 3: + get_operand (&ptr, operand + 0, 0); + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 1, 1); + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 2, 2); + break; + case 4: + get_operand (&ptr, operand + 0, 0); + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 1, 1); + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 2, 2); + if (*ptr == ',') + ptr++; + get_cc_operand (&ptr, operand + 3, 3); + break; -static -opcode_entry_type * -DEFUN(get_specific,(opcode, operands), - opcode_entry_type *opcode AND - op_type *operands) + default: + abort (); + } + return ptr; +} + +/* Passed a pointer to a list of opcodes which use different + addressing modes. Return the opcode which matches the opcodes + provided. */ + +static opcode_entry_type * +get_specific (opcode_entry_type *opcode, op_type *operands) { - opcode_entry_type *this_try = opcode ; + opcode_entry_type *this_try = opcode; int found = 0; unsigned int noperands = opcode->noperands; - - unsigned int dispreg; - unsigned int this_index = opcode->idx; - while (this_index == opcode->idx && !found) - { - unsigned int i; - - this_try = opcode ++; - for (i = 0; i < noperands; i++) + int this_index = opcode->idx; + + while (this_index == opcode->idx && !found) { - int mode = operands[i].mode; + unsigned int i; - if ((mode&CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) - { - /* it could be an pc rel operand, if this is a da mode and - we like disps, then insert it */ - - if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) + this_try = opcode++; + for (i = 0; i < noperands; i++) { - /* This is the case */ - operands[i].mode = CLASS_DISP; - } - else { - /* Can't think of a way to turn what we've been given into - something that's ok */ - goto fail; + unsigned int mode = operands[i].mode; + + if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO)) + { + mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO; + } + + if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) + { + /* It could be a pc rel operand, if this is a da mode + and we like disps, then insert it. */ + + if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) + { + /* This is the case. */ + operands[i].mode = CLASS_DISP; + } + else if (mode == CLASS_BA && this_try->arg_info[i]) + { + /* Can't think of a way to turn what we've been + given into something that's OK. */ + goto fail; + } + else if (this_try->arg_info[i] & CLASS_PR) + { + if (mode == CLASS_REG_LONG && segmented_mode) + { + /* OK. */ + } + else if (mode == CLASS_REG_WORD && !segmented_mode) + { + /* OK. */ + } + else + goto fail; + } + else + goto fail; + } + switch (mode & CLASS_MASK) + { + default: + break; + case CLASS_IRO: + if (operands[i].regsize != CLASS_REG_WORD) + as_bad (_("invalid indirect register size")); + reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; + break; + case CLASS_IR: + if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG) + || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD)) + as_bad (_("invalid indirect register size")); + reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; + break; + case CLASS_X: + case CLASS_BA: + case CLASS_BX: + case CLASS_DISP: + case CLASS_REG: + case CLASS_REG_WORD: + case CLASS_REG_BYTE: + case CLASS_REG_QUAD: + case CLASS_REG_LONG: + case CLASS_REGN0: + reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; + break; + case CLASS_CTRL: + if (this_try->opcode == OPC_ldctlb && the_ctrl != 1) + as_bad (_("invalid control register name")); + break; + } } - } - switch (mode & CLASS_MASK) { - default: - break; - case CLASS_X: - case CLASS_IR: - case CLASS_BA: - case CLASS_BX: - case CLASS_DISP: - case CLASS_REG: - reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; - break; - } - } - found =1; - fail: ; - } - if (found) - return this_try; - else - return 0; + found = 1; + fail: + ; + } + if (found) + return this_try; + else + return 0; } +static char buffer[20]; + static void -DEFUN(check_operand,(operand, width, string), - struct z8k_op *operand AND - unsigned int width AND - char *string) +newfix (int ptr, int type, int size, expressionS *operand) { - if (operand->exp.X_add_symbol == 0 - && operand->exp.X_subtract_symbol == 0) - { - - /* No symbol involved, let's look at offset, it's dangerous if any of - the high bits are not 0 or ff's, find out by oring or anding with - the width and seeing if the answer is 0 or all fs*/ - if ((operand->exp.X_add_number & ~width) != 0 && - (operand->exp.X_add_number | width)!= (~0)) + int is_pcrel = 0; + fixS *fixP; + + /* Size is in nibbles. */ + if (operand->X_add_symbol + || operand->X_op_symbol + || operand->X_add_number) { - as_warn("operand %s0x%x out of range.", string, operand->exp.X_add_number); + switch(type) + { + case BFD_RELOC_8_PCREL: + case BFD_RELOC_Z8K_CALLR: + case BFD_RELOC_Z8K_DISP7: + is_pcrel = 1; + } + fixP = fix_new_exp (frag_now, ptr, size / 2, + operand, is_pcrel, type); + if (is_pcrel) + fixP->fx_no_overflow = 1; } - } - } -static void -DEFUN(newfix,(ptr, type, operand), - int ptr AND - int type AND - expressionS *operand) +static char * +apply_fix (char *ptr, int type, expressionS *operand, int size) { - if (operand->X_add_symbol - || operand->X_subtract_symbol - || operand->X_add_number) { - fix_new(frag_now, - ptr, - 1, - operand->X_add_symbol, - operand->X_subtract_symbol, - operand->X_add_number, - 0, - type); - } + long n = operand->X_add_number; + + /* size is in nibbles. */ + + newfix ((ptr - buffer) / 2, type, size + 1, operand); + switch (size) + { + case 8: /* 8 nibbles == 32 bits. */ + *ptr++ = n >> 28; + *ptr++ = n >> 24; + *ptr++ = n >> 20; + *ptr++ = n >> 16; + case 4: /* 4 nibbles == 16 bits. */ + *ptr++ = n >> 12; + *ptr++ = n >> 8; + case 2: + *ptr++ = n >> 4; + case 1: + *ptr++ = n >> 0; + break; + } + return ptr; } +/* Now we know what sort of opcodes it is. Let's build the bytes. */ -/* Now we know what sort of opcodes it is, lets build the bytes - - */ -static void - DEFUN (build_bytes,(this_try, operand), - opcode_entry_type *this_try AND - struct z8k_op *operand) +static void +build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED) { - unsigned int i; - char buffer[20]; - int length; - char *output; char *output_ptr = buffer; - char part; int c; - char high; - int nib; int nibble; - unsigned short *class_ptr; - memset(buffer, 20, 0); - class_ptr = this_try->byte_info; - top: ; + unsigned int *class_ptr; - for (nibble = 0; c = *class_ptr++; nibble++) - { + frag_wane (frag_now); + frag_new (0); - switch (c & CLASS_MASK) + if (frag_room () < 8) + frag_grow (8); /* Make room for maximum instruction size. */ + + memset (buffer, 0, sizeof (buffer)); + class_ptr = this_try->byte_info; + + for (nibble = 0; (c = *class_ptr++); nibble++) { - default: - - abort(); - case CLASS_ADDRESS: - /* Direct address, we don't cope with the SS mode right now */ - if (segmented_mode) { - newfix((output_ptr-buffer)/2, R_DA | R_SEG, da_operand); - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - } - else { - newfix((output_ptr-buffer)/2, R_DA, da_operand); - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - } - da_operand = 0; - break; - case CLASS_DISP8: - /* pc rel 8 bit */ - newfix((output_ptr-buffer)/2, R_JR, da_operand); - da_operand = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - break; - case CLASS_CC: - *output_ptr++ = the_cc; - break; - case CLASS_BIT: - *output_ptr++ = c & 0xf; - break; - case CLASS_REGN0: - if (reg[c&0xf] == 0) - { - as_bad("can't use R0 here"); - } - case CLASS_REG: - case CLASS_REG_BYTE: - case CLASS_REG_WORD: - case CLASS_REG_LONG: - case CLASS_REG_QUAD: - /* Insert bit mattern of - right reg */ - *output_ptr++ = reg[c & 0xf]; - break; - case CLASS_DISP: - newfix((output_ptr-buffer)/2, R_DA, da_operand); - da_operand= 0; - output_ptr += 4; - break; - case CLASS_IMM: - { - nib = 0; - switch (c & ARG_MASK) - { - case ARG_IMM4: - *output_ptr ++ = imm_operand->X_add_number; - imm_operand->X_add_number = 0; - newfix((output_ptr-buffer)/2, R_IMM4L, imm_operand); - break; - case ARG_IMMNMINUS1: - imm_operand->X_add_number --; - newfix((output_ptr-buffer)/2, R_IMM4L, imm_operand); - *output_ptr++ = 0; - break; - case ARG_IMM8: - newfix((output_ptr-buffer)/2, R_IMM8, imm_operand); - *output_ptr++ = 0; - *output_ptr++ = 0; - - case ARG_NIM16: - imm_operand->X_add_number = - imm_operand->X_add_number; - newfix((output_ptr-buffer)/2, R_DA, imm_operand); - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - break; - - case ARG_IMM16: + switch (c & CLASS_MASK) { - int n = imm_operand->X_add_number ; - imm_operand->X_add_number = 0; - newfix((output_ptr-buffer)/2, R_DA, imm_operand); - *output_ptr++ = n>>24; - *output_ptr++ = n>>16; - *output_ptr++ = n>>8; - *output_ptr++ = n; - } - - break; - - case ARG_IMM32: - newfix((output_ptr-buffer)/2, R_IMM32, imm_operand); - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - *output_ptr++ = 0; - - break; - default: - abort(); - - - } - } + abort (); + + case CLASS_ADDRESS: + /* Direct address, we don't cope with the SS mode right now. */ + if (segmented_mode) + { + /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */ + output_ptr = apply_fix (output_ptr, BFD_RELOC_32, da_operand, 8); + } + else + { + output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4); + } + da_operand = 0; + break; + case CLASS_DISP8: + /* pc rel 8 bit */ + output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2); + da_operand = 0; + break; + + case CLASS_0DISP7: + /* pc rel 7 bit */ + *output_ptr = 0; + output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2); + da_operand = 0; + break; + + case CLASS_1DISP7: + /* pc rel 7 bit */ + *output_ptr = 0x80; + output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2); + output_ptr[-2] = 0x8; + da_operand = 0; + break; + + case CLASS_BIT_1OR2: + *output_ptr = c & 0xf; + if (imm_operand) + { + if (imm_operand->X_add_number == 2) + *output_ptr |= 2; + else if (imm_operand->X_add_number != 1) + as_bad (_("immediate must be 1 or 2")); + } + else + as_bad (_("immediate 1 or 2 expected")); + output_ptr++; + break; + case CLASS_CC: + *output_ptr++ = the_cc; + break; + case CLASS_0CCC: + if (the_ctrl < 2 || the_ctrl > 7) + as_bad (_("invalid control register name")); + *output_ptr++ = the_ctrl; + break; + case CLASS_1CCC: + if (the_ctrl < 2 || the_ctrl > 7) + as_bad (_("invalid control register name")); + *output_ptr++ = the_ctrl | 0x8; + break; + case CLASS_00II: + *output_ptr++ = (~the_interrupt & 0x3); + break; + case CLASS_01II: + *output_ptr++ = (~the_interrupt & 0x3) | 0x4; + break; + case CLASS_FLAGS: + *output_ptr++ = the_flags; + break; + case CLASS_IGNORE: + case CLASS_BIT: + *output_ptr++ = c & 0xf; + break; + case CLASS_REGN0: + if (reg[c & 0xf] == 0) + as_bad (_("can't use R0 here")); + /* Fall through. */ + case CLASS_REG: + case CLASS_REG_BYTE: + case CLASS_REG_WORD: + case CLASS_REG_LONG: + case CLASS_REG_QUAD: + /* Insert bit mattern of right reg. */ + *output_ptr++ = reg[c & 0xf]; + break; + case CLASS_DISP: + switch (c & ARG_MASK) + { + case ARG_DISP12: + output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_CALLR, da_operand, 4); + break; + case ARG_DISP16: + output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4); + break; + default: + output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4); + } + da_operand = 0; + break; + + case CLASS_IMM: + { + switch (c & ARG_MASK) + { + case ARG_NIM4: + if (imm_operand->X_add_number > 15) + as_bad (_("immediate value out of range")); + imm_operand->X_add_number = -imm_operand->X_add_number; + output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1); + break; + /*case ARG_IMMNMINUS1: not used. */ + case ARG_IMM4M1: + imm_operand->X_add_number--; + /* Drop through. */ + case ARG_IMM4: + if (imm_operand->X_add_number > 15) + as_bad (_("immediate value out of range")); + output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1); + break; + case ARG_NIM8: + imm_operand->X_add_number = -imm_operand->X_add_number; + /* Drop through. */ + case ARG_IMM8: + output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2); + break; + case ARG_IMM16: + output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4); + break; + case ARG_IMM32: + output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8); + break; + default: + abort (); + } + } + } } - } - - /* Copy from the nibble buffer into the frag */ - { - int length = (output_ptr - buffer) / 2 ; - char *src = buffer; - char *fragp = frag_more(length); - frag_wane(frag_now); - frag_new(0); - while (src < output_ptr) - { - *fragp = (src[0] << 4) | src[1]; - src+=2; - fragp++; - } - - - } + /* Copy from the nibble buffer into the frag. */ + { + int length = (output_ptr - buffer) / 2; + char *src = buffer; + char *fragp = frag_more (length); + while (src < output_ptr) + { + *fragp = (src[0] << 4) | src[1]; + src += 2; + fragp++; + } + } } /* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This funciton is supposed to emit - the frags/bytes it assembles to. - */ + machine dependent instruction. This function is supposed to emit + the frags/bytes it assembles to. */ - - -void - DEFUN(md_assemble,(str), - char *str) +void +md_assemble (char *str) { + char c; char *op_start; char *op_end; - unsigned int i; - struct z8k_op operand[3]; + struct z8k_op operand[4]; opcode_entry_type *opcode; - opcode_entry_type * prev_opcode; - - char *dot = 0; - char c; - /* Drop leading whitespace */ + + /* Drop leading whitespace. */ while (*str == ' ') - str++; - - /* find the op code end */ + str++; + + /* Find the op code end. */ for (op_start = op_end = str; - *op_end != 0 && *op_end != ' '; - op_end ++) - { - } - - ; - - if (op_end == op_start) - { - as_bad("can't find opcode "); - } + *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end]; + op_end++) + ; + + if (op_end == op_start) + { + as_bad (_("can't find opcode ")); + } c = *op_end; - - *op_end = 0; - - opcode = (opcode_entry_type *) hash_find(opcode_hash_control, - op_start); - - if (opcode == NULL) - { - as_bad("unknown opcode"); - return; - } - - - input_line_pointer = get_operands(opcode, op_end, - operand); - *op_end = c; - prev_opcode = opcode; - - opcode = get_specific(opcode, operand); - - if (opcode == 0) - { - /* Couldn't find an opcode which matched the operands */ - char *where =frag_more(2); - where[0] = 0x0; - where[1] = 0x0; - as_bad("Can't find opcode to match operands"); - return; - } - - build_bytes(opcode, operand); -} + *op_end = 0; /* Zero-terminate op code string for hash_find() call. */ + opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start); -void - DEFUN(tc_crawl_symbol_chain, (headers), - object_headers *headers) -{ - printf("call to tc_crawl_symbol_chain \n"); -} + if (opcode == NULL) + { + as_bad (_("unknown opcode")); + return; + } -symbolS *DEFUN(md_undefined_symbol,(name), - char *name) -{ - return 0; + *op_end = c; /* Restore original string. */ + + if (opcode->opcode == 250) + { + pseudo_typeS *p; + char oc; + char *old = input_line_pointer; + + /* Was really a pseudo op. */ + + input_line_pointer = op_end; + + oc = *old; + *old = '\n'; + while (*input_line_pointer == ' ') + input_line_pointer++; + p = (pseudo_typeS *) (opcode->func); + + (p->poc_handler) (p->poc_val); + input_line_pointer = old; + *old = oc; + } + else + { + char *new_input_line_pointer; + + new_input_line_pointer = get_operands (opcode, op_end, operand); + if (new_input_line_pointer) + { + input_line_pointer = new_input_line_pointer; + opcode = get_specific (opcode, operand); + } + + if (new_input_line_pointer == NULL || opcode == NULL) + { + /* Couldn't find an opcode which matched the operands. */ + char *where = frag_more (2); + + where[0] = 0x0; + where[1] = 0x0; + + as_bad (_("Can't find opcode to match operands")); + return; + } + + build_bytes (opcode, operand); + } } -void - DEFUN(tc_headers_hook,(headers), - object_headers *headers) +/* We have no need to default values of symbols. */ + +symbolS * +md_undefined_symbol (char *name ATTRIBUTE_UNUSED) { - printf("call to tc_headers_hook \n"); + return 0; } -void - DEFUN_VOID(md_end) + +/* Various routines to kill one day. */ + +const char * +md_atof (int type, char *litP, int *sizeP) { + return ieee_md_atof (type, litP, sizeP, TRUE); } + +const char *md_shortopts = "z:"; -/* Various routines to kill one day */ -/* Equal to MAX_PRECISION in atof-ieee.c */ -#define MAX_LITTLENUMS 6 +struct option md_longopts[] = + { +#define OPTION_RELAX (OPTION_MD_BASE) + {"linkrelax", no_argument, NULL, OPTION_RELAX}, + {NULL, no_argument, NULL, 0} + }; -/* Turn a string in input_line_pointer into a floating point constant of type - type, and store the appropriate bytes in *litP. The number of LITTLENUMS - emitted is stored in *sizeP . An error message is returned, or NULL on OK. - */ -char * - md_atof(type,litP,sizeP) -char type; -char *litP; -int *sizeP; +size_t md_longopts_size = sizeof (md_longopts); + +int +md_parse_option (int c, const char *arg) { - int prec; - LITTLENUM_TYPE words[MAX_LITTLENUMS]; - LITTLENUM_TYPE *wordP; - char *t; - char *atof_ieee(); - - switch(type) { - case 'f': - case 'F': - case 's': - case 'S': - prec = 2; - break; - - case 'd': - case 'D': - case 'r': - case 'R': - prec = 4; - break; - - case 'x': - case 'X': - prec = 6; - break; - - case 'p': - case 'P': - prec = 6; - break; - - default: - *sizeP=0; - return "Bad call to MD_ATOF()"; - } - t=atof_ieee(input_line_pointer,type,words); - if(t) - input_line_pointer=t; - - *sizeP=prec * sizeof(LITTLENUM_TYPE); - for(wordP=words;prec--;) { - md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE)); - litP+=sizeof(LITTLENUM_TYPE); + switch (c) + { + case 'z': + if (!strcmp (arg, "8001")) + z8k_target_from_cmdline = 2; + else if (!strcmp (arg, "8002")) + z8k_target_from_cmdline = 1; + else + { + as_bad (_("invalid architecture -z%s"), arg); + return 0; } - return ""; /* Someone should teach Dean about null pointers */ -} + break; -int - md_parse_option(argP, cntP, vecP) -char **argP; -int *cntP; -char ***vecP; + case OPTION_RELAX: + linkrelax = 1; + break; -{ - return 0; - -} + default: + return 0; + } -int md_short_jump_size; + return 1; +} -void tc_aout_fix_to_chars () { printf("call to tc_aout_fix_to_chars \n"); - abort(); } -void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol) -char *ptr; -long from_addr; -long to_addr; -fragS *frag; -symbolS *to_symbol; +void +md_show_usage (FILE *stream) { - as_fatal("failed sanity check."); + fprintf (stream, _("\ + Z8K options:\n\ + -z8001 generate segmented code\n\ + -z8002 generate unsegmented code\n\ + -linkrelax create linker relaxable code\n")); } - + void - md_create_long_jump(ptr,from_addr,to_addr,frag,to_symbol) -char *ptr; -long from_addr, to_addr; -fragS *frag; -symbolS *to_symbol; +md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, + segT sec ATTRIBUTE_UNUSED, + fragS *fragP ATTRIBUTE_UNUSED) { - as_fatal("failed sanity check."); + printf (_("call to md_convert_frag\n")); + abort (); } -void - md_convert_frag(headers, fragP) -object_headers *headers; -fragS * fragP; +/* Generate a machine dependent reloc from a fixup. */ -{ printf("call to md_convert_frag \n"); abort(); } +arelent* +tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, + fixS *fixp ATTRIBUTE_UNUSED) +{ + arelent *reloc; -long - DEFUN(md_section_align,(seg, size), - segT seg AND - long size) + reloc = XNEW (arelent); + reloc->sym_ptr_ptr = XNEW (asymbol *); + *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); + reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; + reloc->addend = fixp->fx_offset; + reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); + + if (! reloc->howto) + { + as_bad_where (fixp->fx_file, fixp->fx_line, + _("Cannot represent %s relocation in object file"), + bfd_get_reloc_code_name (fixp->fx_r_type)); + abort (); + } + return reloc; +} + +valueT +md_section_align (segT seg, valueT size) { - return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg])); - + int align = bfd_get_section_alignment (stdoutput, seg); + valueT mask = ((valueT) 1 << align) - 1; + + return (size + mask) & ~mask; } +/* Attempt to simplify or eliminate a fixup. To indicate that a fixup + has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL, + we will have to generate a reloc entry. */ void - md_apply_fix(fixP, val) -fixS *fixP; -long val; +md_apply_fix (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED) { + long val = * (long *) valP; char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - - switch(fixP->fx_r_type) { - case R_IMM4L: - buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf); - break; - - case R_JR: - - *buf++= val; -/* if (val != 0) abort();*/ - break; - - - case R_IMM8: - buf[0] += val; - break; - break; - case R_DA: - *buf++=(val>>8); - *buf++=val; - break; - case R_IMM32: - *buf++=(val>>24); - *buf++=(val>>16); - *buf++=(val>>8); - *buf++=val; - break; - case R_DA | R_SEG: - *buf++ = (val>>16); - *buf++ = 0x00; - *buf++ = (val>>8); - *buf++ = val; - break; - default: - abort(); - - } -} -void DEFUN(md_operand, (expressionP),expressionS *expressionP) -{ } + switch (fixP->fx_r_type) + { + case BFD_RELOC_Z8K_IMM4L: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + buf[0] = (buf[0] & 0xf0) | (val & 0xf); + break; -int md_long_jump_size; -int - md_estimate_size_before_relax(fragP, segment_type) -register fragS *fragP; -register segT segment_type; -{ - printf("call tomd_estimate_size_before_relax \n"); abort(); } -/* Put number into target byte order */ - -void DEFUN(md_number_to_chars,(ptr, use, nbytes), - char *ptr AND - long use AND - int nbytes) -{ - switch (nbytes) { - case 4: *ptr++ = (use >> 24) & 0xff; - case 3: *ptr++ = (use >> 16) & 0xff; - case 2: *ptr++ = (use >> 8) & 0xff; - case 1: *ptr++ = (use >> 0) & 0xff; - break; - default: - abort(); - } -} -long md_pcrel_from(fixP) -fixS *fixP; { abort(); } + case BFD_RELOC_8: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + *buf++ = val; + break; -void tc_coff_symbol_emit_hook() { } + case BFD_RELOC_16: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + *buf++ = (val >> 8); + *buf++ = val; + } + break; + case BFD_RELOC_32: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + *buf++ = (val >> 24); + *buf++ = (val >> 16); + *buf++ = (val >> 8); + *buf++ = val; + } + break; -void tc_reloc_mangle(fix_ptr, intr, base) -fixS *fix_ptr; -struct internal_reloc *intr; -bfd_vma base; + case BFD_RELOC_8_PCREL: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + if (val & 1) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("cannot branch to odd address")); + val /= 2; + if (val > 127 || val < -128) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relative jump out of range")); + *buf++ = val; + fixP->fx_no_overflow = 1; + fixP->fx_done = 1; + } + break; -{ - symbolS *symbol_ptr; - - symbol_ptr = fix_ptr->fx_addsy; - - /* If this relocation is attached to a symbol then it's ok - to output it */ - if (fix_ptr->fx_r_type == RELOC_32) { - /* cons likes to create reloc32's whatever the size of the reloc.. - */ - switch (fix_ptr->fx_size) - { - - case 2: - intr->r_type = R_DA; + case BFD_RELOC_16_PCREL: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size; + if (val > 32767 || val < -32768) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relative address out of range")); + *buf++ = (val >> 8); + *buf++ = val; + fixP->fx_no_overflow = 1; + fixP->fx_done = 1; + } break; - case 1: - intr->r_type = R_IMM8; + + case BFD_RELOC_Z8K_CALLR: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + if (val & 1) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("cannot branch to odd address")); + if (val > 4096 || val < -4095) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relative call out of range")); + val = -val / 2; + *buf = (*buf & 0xf0) | ((val >> 8) & 0xf); + buf++; + *buf++ = val & 0xff; + fixP->fx_no_overflow = 1; + fixP->fx_done = 1; + } break; - default: - abort(); - + + case BFD_RELOC_Z8K_DISP7: + if (fixP->fx_addsy) + { + fixP->fx_no_overflow = 1; + fixP->fx_done = 0; + } + else + { + if (val & 1) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("cannot branch to odd address")); + val /= 2; + if (val > 0 || val < -127) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relative jump out of range")); + *buf = (*buf & 0x80) | (-val & 0x7f); + fixP->fx_no_overflow = 1; + fixP->fx_done = 1; + } + break; + + default: + printf(_("md_apply_fix: unknown r_type 0x%x\n"), fixP->fx_r_type); + abort (); } - - } - else { - intr->r_type = fix_ptr->fx_r_type; - } - - intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where +base; - intr->r_offset = fix_ptr->fx_offset; - - if (symbol_ptr) - intr->r_symndx = symbol_ptr->sy_number; - else - intr->r_symndx = -1; - - + + if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) + fixP->fx_done = 1; +} + +int +md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, + segT segment_type ATTRIBUTE_UNUSED) +{ + printf (_("call to md_estimate_size_before_relax\n")); + abort (); } +/* Put number into target byte order. */ +void +md_number_to_chars (char *ptr, valueT use, int nbytes) +{ + number_to_chars_bigendian (ptr, use, nbytes); +} + +/* On the Z8000, a PC-relative offset is relative to the address of the + instruction plus its size. */ +long +md_pcrel_from (fixS *fixP) +{ + return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; +} + +void +tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED) +{ +}